Cross-Platform Mobile C++ Development with Visual Studio

// main.cpp — Android Native Activity entry point
#include <android_native_app_glue.h>
#include <EGL/egl.h>
#include <GLES/gl.h>

struct AppState {
    ANativeWindow* window = nullptr;
    EGLDisplay    display = EGL_NO_DISPLAY;
    EGLSurface    surface = EGL_NO_SURFACE;
    EGLContext    context = EGL_NO_CONTEXT;
    bool          running = false;
};

// Called by the OS when the app receives system events
static void HandleAppCmd(android_app* app, int32_t cmd) {
    AppState* state = static_cast<AppState*>(app->userData);
    switch (cmd) {
    case APP_CMD_INIT_WINDOW:
        if (app->window != nullptr) {
            state->window = app->window;
            state->running = true;
        }
        break;
    case APP_CMD_TERM_WINDOW:
        state->running = false;
        break;
    }
}

// Main entry point — called by the NativeActivity glue
void android_main(android_app* app) {
    AppState state{};
    app->userData = &state;
    app->onAppCmd = HandleAppCmd;

    while (true) {
        int events = 0;
        android_poll_source* source = nullptr;
        ALooper_pollAll(state.running ? 0 : -1, nullptr, &events,
                        reinterpret_cast<void**>(&source));
        if (source) source->process(app, source);
        if (app->destroyRequested) break;

        if (state.running) {
            // Render a frame — your OpenGL ES code goes here
            glClearColor(0.2f, 0.4f, 0.8f, 1.0f);
            glClear(GL_COLOR_BUFFER_BIT);
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.myandroidapp">

  <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="34" />

  <application android:label="MyAndroidApp" android:hasCode="false">
    <activity android:name="android.app.NativeActivity"
              android:label="MyAndroidApp"
              android:configChanges="orientation|keyboardHidden">
      <meta-data android:name="android.app.lib_name"
                 android:value="MyAndroidApp" />
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>
  </application>
</manifest>